>> dustin hoffman won best actor for "rain man" and "cramer verses cramer." born in the ussr natalia makarova's bali and body control awed audiences after she defected to new york. ♪ >> the pioneer of the chicago blues sound buddy guy won six grammys and influenced generations of musicians. >> for david letterman, this is also unquestionably the single worst night of his life. that medal hanging around his neck, there's a 40% chance he'll hang himself with it. >> david letterman, his approach to late night reinvented the format. >> was he a brilliant, subtle, passive-aggressive parody of a talk show host or just some midwestern goon who was a little bit off? time has proven that there's really just no way of knowing. ♪ >> and some of today's biggest artists came out to honor led zeppelin's sounds, one of the most influential in music. >> nine mind-blowing records in a row. even beethoven would have krapd his pantaloons. ♪ she's buying a stairway to heaven ♪ >> each of us can remember a moment when the people on this stage touched our lives, that uniqu